HL-4150CDN

FAQs & Troubleshooting

FAQs & Troubleshooting

Clean the inside of the machine

Follow the steps below to clean the inside of the machine:


DO NOT use cleaning materials that contain ammonia, alcohol, any type of spray, or any type of flammable substance to clean the outside or inside of the machine. Doing this may cause a fire or electrical shock.

DO NOT use any type of flammable substance

  1. Turn off the machine's power switch. Disconnect all interface cables, and then unplug the AC power cord.

  2. Press the front cover release button and then open the front cover.
    Opening the front cover

  3. Hold the green handle of the drum unit. Pull the drum unit out until it stops.
    Pulling out the drum unit

  4. Turn the green lock lever (1) at the left of the machine counterclockwise to the release position.
    Turning the green lock lever

  5. Holding the green handles of the drum unit, lift the front of the drum unit and remove it from the machine.
    Removing the drum unit

    • Be careful not to inhale toner.
    • We recommend that you place the drum unit on a clean, flat surface with a piece of disposable paper underneath it in case you accidentally spill or scatter toner.
    • Hold the green handles of the drum unit when you carry it. DO NOT hold the sides of the drum unit.
    Holding the green handles


    To prevent damage to the machine from static electricity, DO NOT touch the electrodes shown in the illustration.

    DO NOT touch the electrodes

  6. Wipe the four scanner windows (1) with a dry, lint-free cloth.
    Wiping the scanner windows

  7. Make sure the green lock lever (1) is in the release position as shown in the illustration.
    Checking the green lock lever position

  8. Match the guide ends (2) of the drum unit to the Arrow mark marks (1) on both sides of the machine, then gently slide the drum unit into the machine until it stops at the green lock lever.
    Sliding the drum unit

  9. Turn the green lock lever (1) clockwise to the lock position.
    Turning the green lock lever
  10. Push the drum unit in until it stops.
    Pushing the drum unit in

  11. Close the front cover of the machine.

  12. Connect interface cables and then plug the machine back in. Turn on the power switch.

If your question was not answered, have you checked other FAQs?

Have you checked the manuals?

If you need further assistance, please contact Brother customer service:

Related Models

HL-4150CDN, HL-4570CDW

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